Organically Templated Zirconium Fluorides: Hydrothermal Syntheses, Structural Relationships, and Thermal Behavior of (C2H10N2)Zr2F10·H2O and (C4H12N2)ZrF6·H2O
作者： Richard E. Sykora , Michael Ruf , Thomas E. Albrecht-Schmitt
关键词: Diamine 、 X-ray crystallography 、 Hydrogen bond 、 Hydrate 、 Crystal structure 、 Hydrothermal synthesis 、 Crystallography 、 Ethylenediamine 、 Monoclinic crystal system 、 Stereochemistry 、 Chemistry 、 Physical and Theoretical Chemistry 、 Inorganic chemistry 、 Materials Chemistry 、 Electronic, Optical and Magnetic Materials 、 Condensed matter physics 、 Ceramics and Composites
摘要: Abstract The organically templated Zr(IV) fluorides, (C2H10N2) Zr2F10·H2O (AU2-6) and (C4H12N2)ZrF6·H2O (AU1-6) have been prepared from the reaction of ZrO2 with HF ethylenediamine or piperazine under mild hydrothermal conditions. These compounds were characterized by single-crystal X-ray diffraction, DSC, TGA, elemental analysis. AU2-6 consists dodecahedral ZrF8 units that share three edges neighboring dodecahedra to form 2∞[Zr2F10]2− sheets are separated diprotonated cations. AU1-6 contains edge-sharing 1∞[ZrF6]2− chains further hydrogen bond piperazinium cations water molecules. Application dimensional reduction theory demonstrates can be derived parent structure through addition one equivalent fluoride. Thermal analyses indicate molecules in more tightly bound than those as endotherms corresponding loss occur at 226 117°C AU1-6, respectively. Crystallographic data: AU2-6, monoclinic, space group P21/n, a=6.164(1), b=15.612(3), c=11.227(2) A, β=95.31(3)°, Z=4, MoKα, λ·0.71073, R(F)=2.94% for 155 parameters 3294 reflections I>2σ(I); C2/m, a=12.190(5), b=12.732(6), c=6.356(2) β=107.64(3)°, λ=0.71073, R(F)=1.68% 77 869 I>2σ(I).
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